Direct observation of the Ba 114 →Xe 110 →Te 106 →Sn 102 triple α -decay chain using position and time correlations
Capponi, L., Smith, J. F., Ruotsalainen, P., Scholey, C., Rahkila, P., Auranen, K., . . . Uusitalo, J. (2016). Direct observation of the Ba 114 →Xe 110 →Te 106 →Sn 102 triple α -decay chain using position and time correlations. Physical Review C, 94 (2), 024314. doi:10.1103/PhysRevC.94.024314
Published inPhysical Review C
© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.
The triple α-decay chain 114Ba → 110Xe → 106Te → 102Sn has been directly observed for the first time, following the 58Ni(58Ni ,2n) reaction. Implantation of 114Ba nuclei into a double-sided silicon-strip detector has allowed their α decays to be correlated in position and time with the α decays of the daughter (110Xe) and granddaughter (106Te) nuclei. In total, 17 events have been assigned to the 114Ba → 110Xe → 106Te → 102Sn triple α-decay chain. The energy of the 114Ba α decay has been measured to be Eα = 3480(20) keV, which is 70 keV higher than the previously measured value, and the half-life of 114Ba has been measured with improved accuracy, to be 380+190 −110 ms. A revised Q12C value of 19 035(45) keV for 114Ba is presented.